The Kokumoto Analog Tachometer is a precision-engineered instrument designed for reliable monitoring of marine engine speeds. Manufactured by the renowned Kokumoto Instrument Mfg. Co. Ltd. in Tokyo, Japan, this tachometer is built for durability in demanding marine environments. It features a clear, easy-to-read dual-scale dial that distinctly indicates both “Ahead” (forward) and “Astern” (reverse) engine rotation, a critical feature for safe navigation and machinery management. The robust design includes rear terminals for straightforward electrical connection and a user-accessible calibration screw for fine-tuning, ensuring accurate performance over its service life.